Standard Practice for
Monitoring Atmospheric SO2 Using the Sulfation Plate
Technique1
This standard is issued under the fixed designation G 91; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
click below Astm G 91 – 97 pdf free download
click here Astm G 90 – 98 pdf free download
